Vapor stove



(No Model.)

F. A. LYMAN.

VAPOR STOVE. No. 324,947. Patented Aug. 25, 1885.

N. PETERS, Phaw-umn m hen Washingon. D. C

UNrTEn STATES PATENT OFFICE.

FORDYCE A. LYMAN, OF CLEVELAND, OHIO VAPO R STOVE.

SJILECIFICATION forming part of Letters Patent No. 324,947, dated August 25, 1885.

Application filed August 2, 1884. (No model.)

To all whom it may concern:

Be it known that I, FORDYCE A. LYMAN, of Cleveland, in the county of Ouyahoga, and State of Ohio, have invented certain new and useful Improvements in Vapor-Stoves; and I do hereby declare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention relates to improvements in vapor-stoves, the object being to provide shields around the jet-orifices that discharge into the commingling-tube to prevent the ignition of the gases in the commingling-tubes by the flames from the initial combustionchamber.

A further object is to provide funnel-shaped internal mouth-pieces for the comminglingtube,to increase the draft in these tubes and to prevent a reacting or back draft.

A further object is to provide a perforated plate for the bottom of the burner, through which the vapor passes from the com minglingtube to prevent the ignition of the gases in the tube from the flame of the burner.

A further object is to provide a supportingdrum that may be placed on the stove to ele vate an oven, boiler,or other large utensil, so that it will not interfere with the use of adjacent burners.

A further object is to provide an extension commingling-tube to conduct the vapor to a burner inside the drum and adjacent to the utensil supported on the drum.

\Vith these objects in view my invention consists in certain features of construction and in combination of parts hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a view in perspective of my improved vaporstove and attachments. Fig. 2 is an enlarged view in perspective of the generator, commingling-tubes, and the respective attachments, and showing, also, an extension commingling-tube in position. Fig. 3 is an enlarged vertical section through the center of a burner. Fig. 4 is an enlarged view in perspective oi the perforated bottom-plate for a burner. Fig. 5 is an enlarged view in perspective of aburner.

My improvements are designed more espeeially for a vapor'stove on which I have already obtained Letters Patent of the United States, No. 293,259, dated February 12, 1884.

A represents the top part of the stove, mounted on the legs A, and provided with the braces c.

B is a retort connected at the bottom with a suitable tube, H, leading to the supplytank, H, and at the top expanding laterally into a broad vaporizing'chamber, B.

C is the combustion-ehamber, where the initial heat is supplied to vaporize the gasoline in the retort and vaporizirig-chambers B and B. Vapor from the chamber B passes through the hollow bent arm B and is discharged, by means of the valve D, through the nozzle 0 into the chamber 0, to support the combus tion therein.

E are commingling-tnbes supported from the table by the bracket E, with their horizontal parts in line, respectively, with the etorifices that discharge jets of gas from the chamber B into the ends of the tubes E, where it commingles with the air, and the mixture of air and gas is conducted to the burners F. The j et-orifices are through the hollow plugs d, that are screwed into the part B, and the discharge of the gas is controlled, respectively, by the valves D.

The mechanism thus far is fully described in the former patent aforesaid.

The flames from the chamber 0, if allowed "to rise too high, would sometimes ignite the gas in the commingling-tubes E. To remedy this difiiculty I have provided the shields G. These are thin metal sheets of considerable size, and provided with a central hole, through which the plug 11 passes, so that the shield is held between the outer shoulder or head of air and gas pass back and out at the end of 100 the tube E around the inner sides of the tube. The part 0 forms a tight joint with the outer end of the tube E, and prevents this reacting current and consequent waste of gas. It is also found that the funnel-shaped part 6 greatly increases the draft through the tube E, so that more air is drawn into the tube-a result that is very desirable.

The burner F consisted formerly of the top plate, f, and the bottom frame or spider, j, that were secured by the central bolt, f, and made to clamp the cylindrical perforated plate f. The partf fitted over the upper end of the tube E, and the gases passed out through the perforations in the part f 3 and were burned on the outside thereof.

Sometimes by a side draft or from other cause a back draft was formed, so that the gases inside of the tube E took fire from the burner. To prevent this I have provided the circular perforated bottom plate, F, arranged inside of the burner, as shown in Fig. 3. The gases from the tube E must pass through the perforated bottom plate, F, before they enter the burner, and afterward pass, as aforesaid,

.through the plate f The perforations in the plate are so small that, ordinarily, the flame from the outside of the burner will not pass through and ignite the gas on the inside of the burner; but if this should occur the plate F will prevent the flames from extending into the comm'ingling-tube, so that no harm will be done. The unusual appearance of the burner with the gas burning on the inside would soon attract attention, when the gas should be turned off from this comminglingtube, which would of course extinguish the flame at the burner both inside and outside, after which the burner could be relighted in the usual manner.

It is frequently necessary to heat large utensilssuch as bakeovens, boilers, &e.that, although they require the heat of but one burner, are of such size that they interfere with placing vessels on the adjacent burner.

. To overcome this difiiculty I have devised the following:

K is a sheet-metal drum of sufficient diameter to sit on the opening in the stove around a burner, and of sufficient height to elevate the oven L or other utensil set thereon so far above the stove top that ordinary vessels may be placed upon the adjacent burner. The burner is removed from the tube E, over which the drum K is placed, and an extension-tube, E is placed on the end of the tube E, from which the burner has been removed, and the burner is placed upon the upper end of the tube E. This tube 1 extends so far up into the drum K that the burner on the end thereof is in suitable proximity to the bottom of the oven or other extension supported on the drum. The heat is confined in the drum, so that its action on the utensil above is, rather increased than otherwise. An orifice, 7c, is provided in the drum and located so that the burner inside of the drum may be seen through the opening, so that the flame at this burner may be regulated as required. If this orifice is of considerable size it should have a cover, perforated plate or isinglass being preferred; but if the orifice is quite small no cover will be necessary.

WVhat I claim is 1. In a vapor-stove, the combination, with a combustion-chamber and a comminglingtube located alongside of the same, of a shield interposed between the combustion-chamber and the commingling-tube.

2. In a vapor-stove, the combination, with a combustion-chamber, a vaporizing-chamber located in close proximity to the combustionchamber and provided with a jet-orifice,and a commingling-tube located in a line with said jet-orifice, of a shield, G, located between the commingling-tube and combustion-chamber.

3. In a vapor-stove, the combination, with a combustion-chamber, a vaporizing-chamber provided with a jet-orifice,and aeomminglingtube having its open end in a line with said jet-orifice, of ashield interposed between the combustion-chamber and the eomminglingtube, and the funnel-shaped mouth-piece inserted in the open end of the comminglingtube, substantially as and for the purpose set forth.

4. In a vapor burner, the combination,

with avapcrizing-chamber and a commingling-tube, of the burner F,seeured on the corn mingling-tube, and a perforated plate between the burner and commingling-tube, substantially as set forth.

5. In avapor-stove, the combination,wilh a base or frame, a commingling-tube, an extension-tube fitting the commingling-tube and extending up above the top plate of the frame,

and a burner secured to said extension-tube,

of the drum surrounding the extension-tube, substantially as set forth.

In testimony whereof I sign this specification,in the presence of two witnesses,this 21st day of July, 1884.

FORDYOE A. LYMAN.

Witnesses:

CHAS. H. DORER, ALBERT E. LYNCH. 

